Seating cushion



FIG. 1 is a rear perspective view of a seating cushion showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof; the right side elevational view being a mirror image thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a perspective view thereof when folded for carrying. 

The ornamental design for a seating cushion, substantially as shown and described. 